EP0299275A1 - Power converter assembly for coupling two kinds of high-voltage three-phase networks together - Google Patents

Power converter assembly for coupling two kinds of high-voltage three-phase networks together Download PDF

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Publication number
EP0299275A1
EP0299275A1 EP88110308A EP88110308A EP0299275A1 EP 0299275 A1 EP0299275 A1 EP 0299275A1 EP 88110308 A EP88110308 A EP 88110308A EP 88110308 A EP88110308 A EP 88110308A EP 0299275 A1 EP0299275 A1 EP 0299275A1
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EP
European Patent Office
Prior art keywords
phase
valve
towers
assigned
converter
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Granted
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EP88110308A
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German (de)
French (fr)
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EP0299275B1 (en
Inventor
Heinz Dipl.-Ing. Wiendl
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Siemens AG
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Siemens AG
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
    • H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
    • H01L25/10—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices having separate containers
    • H01L25/11—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices having separate containers the devices being of a type provided for in group H01L29/00
    • H01L25/112—Mixed assemblies
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
    • H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
    • H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
    • H02M5/443—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M5/45—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001—Technical content checked by a classifier
    • H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Definitions

  • the invention relates to a converter system for coupling two high-voltage three-phase networks according to the preamble of patent claim 1.
  • a decoupled DC circuit in the form of a three-phase to three-phase converter is arranged between the two networks to be connected to one another. After the high-voltage direct current transmission takes place practically at a distance of zero, this direct current circuit is referred to as a "direct current short coupling".
  • the thyristors are controlled via central thyristor electronics, in which each thyristor is assigned a thyristor electronics module, which consists of a Lei Stungteil for the formation and delivery of an electrical ignition pulse, information processing electronics and a signal transmission unit.
  • the signals are transmitted via fiber optic cables.
  • valve towers In order to keep the base area for the so-called valve hall, in which the valve towers are housed, as small as possible, the arrangement of the valve towers is made according to DE-OS 34 04 076 such that each of the semiconductor assemblies assigned to the four secondary windings of the converter transformers is one Form valve tower.
  • This arrangement therefore requires only four valve towers, so that the valve hall does not require a basement for the control electronics, which is also referred to as base electronics, because of the relatively short signal transmission paths. Short signal transmission paths are necessary because the signal transmission takes place via fiber optics and the repeater-free transmission lengths for fiber optic cables are limited to approx. 30 m.
  • the invention has for its object to form valve towers, the individual floors as a thyristor modules in modular design in a number corresponding to the desired throughput can be placed on one another in such a way that the insulation distances between the floors remain the same regardless of the particular throughput that the length of the Control lines designed as light guides do not exceed a permissible size and that, finally, the AC connection lines between the valve towers and the hall bushings of the secondary connections of the transformers are as short as possible and do not have to be crossed.
  • the three-phase overhead lines of the asynchronous three-phase networks 1, 2 to be connected to one another are routed to the primary windings of the associated three-phase transformers 3, 4.
  • Their secondary windings 5, 6 and 7, 8 are via leads R1, S1, T1; R2, S2, T2; R3, S3, T3 and R4, S4, T4 led from the outside through bushings through opposite walls of the valve hall 9 inwards to the assigned valve groups of the two 12-pulse rectifier bridge circuits.
  • One of the two secondary windings of the transformers assigned to the two networks 1, 2 is connected in star and the other in delta.
  • the two rectifier circuits 10, 11 are DC voltage connected to one another with their negative poles grounded via a voltage divider 12 and with the positive poles via smoothing reactors 13, 14, the connecting line of which is also grounded.
  • smoothing chokes 13, 14 serve on the one hand to reduce the DC ripple, and on the other hand to limit the short-circuit current in the event of valve short-circuits.
  • the circuit itself is known and requires no further explanation.
  • FIG. 2 shows how the thyristor assemblies made up of thyristors 15, valve reactors 16 and surge arresters 17 in the form of modules 18 (for simplicity only two modules per tower are shown) as floors of a total of 12 valve towers VT1 to VT12 in principle are.
  • the electrical circuit corresponds to that of FIG 1 and requires no further explanation.
  • the valve towers VT1, VT2 and VT3 are assigned the connecting lines R1, S1, T1 of the transformer TR1, which are connected to the relevant strand in the vertical center thereof.
  • the towers VT4, VT5 and VT6 is the transformer TR2; the towers VT7, VT8 and VT9 the transformer TR3 and the towers VT10, VT11 and VT12 the transformer TR4 assigned accordingly.
  • This type of tower formation and the connections in the vertical center of the towers make the installation of the AC supply lines electrically particularly inexpensive.
  • the bushing insulators 19 (FIG. 3) of the secondary connections of the transformers can all be laid in the same level at approximately the same intervals in the hall walls, so that the shortest possible connecting lines between the transformers and the rectifier towers are provided.
  • the type of connections of the individual valve towers at half height also leads to particularly short, cross-connection and deflection-free alternating current connections. This minimizes the electrical and magnetic interactions between the supply lines.
  • the longitudinal section through the valve hall 9 in FIG. 4 shows that the direct-current line routing to the smoothing chokes 13, 14 arranged on the outside can also be carried out with a short, straight-line line which does not intersect with the alternating-current side.
  • FIGS. 4 and 5 also clearly show the modular design of the towers.
  • Each of the towers consists of ten floors (modules 18) of identical construction and insulation distances from each other and from the neighboring towers.
  • the structure shown with ten modules per tower corresponds to a throughput of 500 MW.
  • the fiber optic cables have a maximum length of about 35 m to the base electronics 21. This enables a cost-effective cellar-free construction of the valve hall and a fail-safe arrangement of the base electronics outside the valve hall.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Rectifiers (AREA)
  • Control Of Electrical Variables (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Ac-Ac Conversion (AREA)

Abstract

Stromrichteranlage zum Kuppeln zweier Hochspannungs-Drehstromnetze Bei einer bekannten Stromrichteranlage dieser Art (Gleichstrom-Kurzkupplung) arbeiten je zwei, einem Netz zugeordnete Stromrichtertransformatoren, von deren Sekundärwicklungen eine in Stern und die andere in Dreieck geschaltet sind, auf einen Drehstrom-Vollweg-Gleichrichter mit zwölf Halbleiter-Gleichrichter-Bauelementen. Um die Grundfläche für die sogenannte Ventilhalle, in der die Ventiltürme untergebracht sind, möglichst klein zu halten, ist die Anordnung der Ventiltürme so getroffen, daß jede der den vier Sekundärwicklungen der Stromrichtertransformatoren zugeordneten Halbleiter-Baugruppen einen Ventilturm bilden. Diese bekannte Anordnung eignet sich nicht für eine modulare Bauweise der Ventiltürme. Die neue Anlagen soll es ermöglichen, Ventiltürme aus einer der geforderten Druchgangsleistung entsprechenden Anzahl von als Modulbaustein aufeinandergeschichteten Etagen mit gleichen Isolierabständen zu errichten. Die jeder sekundärseitigen Drehstromphase (R, S, T) jedes Drehstromtransformators (TR1 bis TR4) zugeordneten Gleichrichterbrückenzweige bilden einen eigenen Turm (VT1 bis VT12), der aus einer leistungsabhängigen Anzahl von mit gleichem Isolierabstand übereinander angeordneten Etagen (18) besteht, die aus modularen Funktionsgruppen (15, 16, 17) gebildet sind. Die so ausgebildete Anlage bietet die Möglichkeit, Kurzkupplungen für unterschiedliche Leistungen nach dem gleichen konstruktiven Konzept zu errichten, so daß die jeweilige Leistungsanpassung durch eine entsprechende Anzahl der einen Turm bildenden Module mit gleichen Ioslierabständen in standardisierter Bauweise vorgenommen werden kann.Converter system for coupling two high-voltage three-phase networks In a known converter system of this type (DC short coupling), two converter transformers assigned to a network, one of whose secondary windings are connected in a star and the other in a triangle, work on a three-phase full-wave rectifier with twelve Semiconductor rectifier components. In order to keep the base area for the so-called valve hall, in which the valve towers are housed, as small as possible, the arrangement of the valve towers is such that each of the semiconductor assemblies assigned to the four secondary windings of the converter transformers form a valve tower. This known arrangement is not suitable for a modular design of the valve towers. The new systems are intended to enable valve towers to be constructed from a number of levels stacked on top of one another as a module, with the same insulation spacing, according to the required throughput capacity. The rectifier bridge branches assigned to each secondary-side three-phase phase (R, S, T) of each three-phase transformer (TR1 to TR4) form a separate tower (VT1 to VT12), which consists of a power-dependent number of levels (18) which are arranged one above the other with the same insulation spacing and which consist of modular ones Function groups (15, 16, 17) are formed. The system designed in this way offers the possibility of constructing short couplings for different outputs according to the same design concept, so that the respective output adaptation can be carried out using a corresponding number of modules forming a tower with the same spacing in a standardized design.

Description

Die Erfindung betrifft eine Stromrichteranlage zum Kuppeln zweier Hochspannungs-Drehstromnetze gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a converter system for coupling two high-voltage three-phase networks according to the preamble of patent claim 1.

Um zwei Netze mit unterschiedlichem Frequenzverhalten (asyn­chrone Netze) zwecks Stromaustausch miteinander zu kuppeln, wird zwischen den beiden miteinander zu verbindenden Netzen ein ent­koppelter Gleichstromkreis in Form eines Drehstrom-Gleichstrom-­Drehstromumsetzers angeordnet. Nachdem die Hochspannungs-Gleich­stromübertragung praktisch mit der Entfernung Null erfolgt, be­zeichnet man diesen Gleichstromkreis als "Gleichstrom-Kurzkupp­lung".In order to couple two networks with different frequency behavior (asynchronous networks) for the purpose of current exchange, a decoupled DC circuit in the form of a three-phase to three-phase converter is arranged between the two networks to be connected to one another. After the high-voltage direct current transmission takes place practically at a distance of zero, this direct current circuit is referred to as a "direct current short coupling".

Eine solche Gleichstrom-Kurzkupplung ist aus "Österreichische Zeitschrift für Elektrizitätswirtschaft", JG 36, Heft 8/9, Sei­te 265 ff bekannt. Die dort beschriebene Anordnung besitzt im wesentlichen zwei gleichstromseitig miteinander verbundenen, drehstromseitig an die beiden Netze angeschlossene Drehstrom-­Vollweg-Stromrichteranordnungen, die anstelle von passiven Gleichrichterventilen steuerbare Gleichrichterbauelemente (Thy­ristoren) enthalten. Dies ermöglicht einen Stromaustausch zwi­schen den beiden gekoppelten Netzen wahlweise in beiden Rich­tungen. Dabei ist die dem speisenden Netz zugeordnete Strom­richteranordnung als Gleichrichter und die dem eingespeisten Netz zugeordnete Stromrichteranordnung als Wechselrichter be­trieben. Die Steuerung der Thyristoren erfolgt über eine zen­trale Thyristorelektronik, bei der jedem Thyristor eine Thyri­storelektronik-Baugruppe zugeordnet ist, die aus einem Lei­ stungsteil für die Bildung und Abgabe eines elektrischen Zünd­impulses, einer informationsverarbeitenden Elektronik sowie einer Signalübertragungseinheit besteht. Die Signalübertragung erfolgt über Lichtleiterkabel.Such a direct current short coupling is known from "Österreichische Zeitschrift für Elektrizitätswirtschaft", JG 36, Issue 8/9, page 265 ff. The arrangement described therein essentially has two three-phase full-wave converter arrangements connected to one another on the DC side and connected to the two networks on the DC side and containing controllable rectifier components (thyristors) instead of passive rectifier valves. This enables a current exchange between the two coupled networks in either direction. The converter arrangement assigned to the feeding network is operated as a rectifier and the converter arrangement assigned to the fed network is operated as an inverter. The thyristors are controlled via central thyristor electronics, in which each thyristor is assigned a thyristor electronics module, which consists of a Lei Stungteil for the formation and delivery of an electrical ignition pulse, information processing electronics and a signal transmission unit. The signals are transmitted via fiber optic cables.

Bei einer aus der DE-OS 34 04 076 bekannten weiteren Anordnung arbeiten je zwei, einem Netz zugeordnete Stromrichtertransfor­matoren, von deren Sekundärwicklungen eine in Stern und die an­dere in Dreieck geschaltet sind, auf einen Drehstrom-Vollweg-­Gleichrichter mit zwölf Halbleiter-Gleichrichter-Bauelementen. Jeder der drei sekundären Drehstromphasen der beiden als Strom­richtertransformatoren arbeitenden Drehstromtransformatoren sind also je zwei hintereinandergeschaltete Halbleiterbauelemente zu­geordnet, so daß je vier Halbleiter-Bauelemente eine Halbleiter-­Baugruppe bilden. Dabei besteht jedes Halbleiter-Bauelement aus zwei hintereinandergeschalteten Thyristoren. Diese Halbleiter-­Baugruppen werden üblicherweise übereinander angeordnet und bil­den zusammen einen sogenannten Ventilturm. Um nun die Grundflä­che für die sogenannte Ventilhalle, in der die Ventiltürme un­tergebracht sind, möglichst klein zu halten, ist gemäß der DE-OS 34 04 076 die Anordnung der Ventiltürme so getroffen, daß jede der den vier Sekundärwicklungen der Stromrichtertransforma­toren zugeordneten Halbleiter-Baugruppen einen Ventilturm bil­den. Diese Anordnung erfordert also nur vier Ventiltürme, so daß die Ventilhalle wegen der relativ kurzen Signalübertragungs­strecken ohne Unterkellerung für die Steuerungselektronik, die auch als Fußpunktelektronik bezeichnet wird, auskommt. Kurze Signalübertragunswege sind deshalb notwendig, weil die Signal­übertragung über Lichtleiter erfolgt und die zwischenverstärker­freien Übertragunslängen bei Lichtleiterkabeln auf ca. 30 m begrenzt sind.In a further arrangement known from DE-OS 34 04 076, two converter transformers assigned to a network, one of whose secondary windings are connected in a star and the other in a triangle, work on a three-phase full-wave rectifier with twelve semiconductor rectifier components . Each of the three secondary three-phase phases of the two three-phase transformers operating as converter transformers are therefore each assigned two semiconductor components connected in series, so that four semiconductor components each form a semiconductor assembly. Each semiconductor component consists of two thyristors connected in series. These semiconductor modules are usually arranged one above the other and together form a so-called valve tower. In order to keep the base area for the so-called valve hall, in which the valve towers are housed, as small as possible, the arrangement of the valve towers is made according to DE-OS 34 04 076 such that each of the semiconductor assemblies assigned to the four secondary windings of the converter transformers is one Form valve tower. This arrangement therefore requires only four valve towers, so that the valve hall does not require a basement for the control electronics, which is also referred to as base electronics, because of the relatively short signal transmission paths. Short signal transmission paths are necessary because the signal transmission takes place via fiber optics and the repeater-free transmission lengths for fiber optic cables are limited to approx. 30 m.

Diese bekannte Anordnung erfüllt ihren Zweck bei relativ niedri­gen Übertragungsleistungen gut. Bei höheren Übertragungslei­stungen stößt diese Anordnung allerdings an die Grenze ihrer Wirtschaftlichkeit. Es kommt hinzu, daß man dazu übergegangen ist, Ventiltürme der vorbeschriebenen Art aus einheitlichen Ven­tilbaugruppen (Modulen) bausteinartig zusammenzusetzen. Diese Technik ist aus der DE-OS 36 05 337 bekannt. Wenn man nun die aus der DE-OS 34 04 076 bekannte Anordnung mit solchen Modulen aufbaut und die Übertragungsleistung erhöht werden soll, was bedeutet, daß auch die Anzahl der Module vergrößert werden muß, ergibt sich das Problem, daß mit steigender Übertragungsleistung auch höhere Isolierabstände zwischen den einzelnen Modulen ge­wählt werden müssen. Dies hängt mit der besonderen Schaltungs­anordnung des Gegenstandes dieses Standes der Technik zusammen, bei dem die jeweils einer Drehstrom-Sekundärwicklung zugeordne­ten Stromrichter jeweils einen Turm bilden, so daß die Spannung zwischen den einzelnen Etagen dem Spitzenwert der jeweiligen Wechselspannung entspricht, die ja um den Faktor 2 höher ist, als die Effektivspannung.This known arrangement serves its purpose well at relatively low transmission powers. At higher transmission powers, however, this arrangement reaches the limit of its economy. There is also the fact that one went over to it is to assemble valve towers of the type described above from unitary valve assemblies (modules). This technique is known from DE-OS 36 05 337. If one now builds up the arrangement known from DE-OS 34 04 076 with such modules and the transmission power is to be increased, which means that the number of modules also has to be increased, the problem arises that with increasing transmission power also higher insulation distances must be chosen between the individual modules. This is related to the special circuit arrangement of the subject of this prior art, in which the converters each associated with a three-phase secondary winding form a tower, so that the voltage between the individual floors corresponds to the peak value of the respective AC voltage, which is by a factor of 2 is higher than the effective voltage.

Der Erfindung liegt die Aufgabe zugrunde, Ventiltürme zu bilden, deren einzelne Etagen als Thyristorbaugruppen in Modulbauweise in einer der gewünschten Durchgangsleistung entsprechenden Zahl in der Weise aufeinandergesetzt werden können, daß die Isolier­abstände zwischen den Etagen unabhängig von der jeweils ausge­legten Durchgangsleistung gleichbleiben, daß die Länge der als Lichtleiter ausgebildeten Steuerleitungen eine zulässige Größe nicht überschreitet und daß schließlich die wechselstromseiti­gen Anschlußleitungen zwischen den Ventiltürmen und den Hallen­durchführungen der Sekundäranschlüsse der Transformatoren mög­lichst kurz sind und nicht überkreuzt geführt werden müssen.The invention has for its object to form valve towers, the individual floors as a thyristor modules in modular design in a number corresponding to the desired throughput can be placed on one another in such a way that the insulation distances between the floors remain the same regardless of the particular throughput that the length of the Control lines designed as light guides do not exceed a permissible size and that, finally, the AC connection lines between the valve towers and the hall bushings of the secondary connections of the transformers are as short as possible and do not have to be crossed.

Diese Aufgabe wird durch die im Patentanspruch 1 angegebene Er­findung gelöst. Dadurch ist erreicht, daß Kurzkupplungen für unterschiedliche Leistungen nach dem gleichen konstruktiven Konzept errichtet werden können, so daß die jeweilige Leistungs­anpassung durch eine entsprechende Anzahl der einen Turm bil­denden Module mit gleichen Isolierabständen vorgenommen werden kann und somit eine weitgehend standardisierte Bauweise bei solchen Kurzkupplungen erreicht ist. Dabei bleiben auch die Leitungslängen für die Glasfaser-Steuerkabel bis zu einer Ge­samtdurchgangsleistung von 500 MW genügend kurz, um eine kel­lerfreie Bauweise zu gestatten. Außerdem ist durch die konse­quente Modulbauweise erreicht, daß man mit einem Hallenkran von maximal 1 t Tragkraft auskommt und sich Reperaturarbeiten auf einen Austausch standardisierter Bauelemente beschränken können, so daß beo kleiner Ersatzteillagerkapazität auch die Ausfall­zeiten bei Reparaturen gering bleiben.This object is achieved by the invention specified in claim 1. It is thereby achieved that close couplings for different performances can be built according to the same design concept, so that the respective performance adaptation can be carried out by a corresponding number of modules forming a tower with the same insulation distances and thus a largely standardized construction such close couplings is reached. The cable lengths for the fiber optic control cables up to a total throughput of 500 MW remain short enough to allow a cellar-free construction. In addition, the consistent modular design means that a hall crane with a maximum load capacity of 1 t can be used and that repair work can be limited to the replacement of standardized components, so that with low spare parts storage capacity, downtimes for repairs are also kept to a minimum.

Ein Ausführungsbeispiel der Erfindung wird anhand von Zeich­nungen im folgenden näher erläutert. Es zeigen:

  • FIG 1 ein Übersichtsschaltbild einer Hochspannungs-Gleichstrom-­Kurzkupplung für die Verknüpfung zweier asynchroner Hoch­spannungsnetze;
  • FIG 2 eine schematische Darstellung der zweietagigen 12 Ventil­türme;
  • FIG 3 eine Grundrißdarstellung einer Ventilhalle für eine Durch­gangsleistung von 500 MW in Draufsicht bei geöffnetem Dach;
  • FIG 4 die gleiche Halle in schnittbildlicher Seitenansicht und
  • FIG 5 in schnittbildlicher Vorderansicht.
An embodiment of the invention is explained in more detail below with reference to drawings. Show it:
  • 1 shows an overview circuit diagram of a high-voltage direct current short coupling for linking two asynchronous high-voltage networks;
  • 2 shows a schematic representation of the two-day 12 valve towers;
  • 3 shows a plan view of a valve hall for a throughput of 500 MW in a top view with the roof open;
  • 4 shows the same hall in a sectional side view and
  • 5 shows a sectional front view.

Gemäß dem Übersichtsschaltbild nach FIG 1 sind die Drehstrom­freileitungen der miteinander zu verbindenden asynchronen Dreh­stromnetze 1, 2 an die Primärwicklungen der zugeordneten Dreh­strom-Transformatoren 3, 4 geführt. Deren Sekundärwicklungen 5, 6 und 7, 8 sind über Zuleitungen R1, S1, T1; R2, S2, T2; R3, S3, T3 sowie R4, S4, T4 von außen über Durchführungen durch gegenüberliegende Wände der Ventilhalle 9 nach innen zu den zu­geordneten Ventilgruppen der beiden 12-Puls-Gleichrichterbrük­kenschaltungen geführt. Jeweils eine der beiden Sekundärwick­lungen der den beiden Netzen 1, 2 zugeordneten Transformato­ren ist in Stern und die andere in Dreieck geschaltet. Die beiden Gleichrichterschaltungen 10, 11 sind gleichspannungs­ seitig mit ihren über einen Spannungsteiler 12 geerdeten Minus­polen unmittelbar und mit den Pluspolen über Glättungsdrosseln 13, 14, deren Verbindungsleitung ebenfalls geerdet ist, mitein­ander verbunden. Diese Glättungsdrosseln 13, 14 dienen einer­seits zum Herabsetzen der Gleichstromwelligkeit, andererseits zum Begrenzen des Kurzschlußstromes bei Ventilkurzschlüssen. Die Schaltung selbst ist bekannt und bedarf keiner näheren Erläuterung.1, the three-phase overhead lines of the asynchronous three-phase networks 1, 2 to be connected to one another are routed to the primary windings of the associated three-phase transformers 3, 4. Their secondary windings 5, 6 and 7, 8 are via leads R1, S1, T1; R2, S2, T2; R3, S3, T3 and R4, S4, T4 led from the outside through bushings through opposite walls of the valve hall 9 inwards to the assigned valve groups of the two 12-pulse rectifier bridge circuits. One of the two secondary windings of the transformers assigned to the two networks 1, 2 is connected in star and the other in delta. The two rectifier circuits 10, 11 are DC voltage connected to one another with their negative poles grounded via a voltage divider 12 and with the positive poles via smoothing reactors 13, 14, the connecting line of which is also grounded. These smoothing chokes 13, 14 serve on the one hand to reduce the DC ripple, and on the other hand to limit the short-circuit current in the event of valve short-circuits. The circuit itself is known and requires no further explanation.

In FIG 2 ist nun gezeigt, wie die aus Thyristoren 15, Ventil­drosseln 16 und Überspannungsableitern 17 aufgebauten Thyristor­baugruppen in Form von Modulen 18 (dargestellt sind der Einfach­heit halber nur jeweils zwei Module pro Turm) als Etagen von insgesamt 12 Ventiltürmen VT1 bis VT12 im Prinzip aufgebaut sind. Die elektrische Schaltung entspricht derjenigen nach FIG 1 und bedarf keiner näheren Erläuterung. Den Ventiltürmen VT1, VT2 und VT3 sind die Anschlußleitungen R1, S1, T1 des Transformators TR1 zugeordnet, die an den betreffenden Trum in dessen vertika­ler Mitte angeschlossen sind. Den Türmen VT4, VT5 und VT6 ist der Transformator TR2; den Türmen VT7, VT8 und VT9 der Transfor­mator TR3 und den Türmen VT10, VT11 und VT12 der Transformator TR4 entsprechend zugeordnet. Durch diese Art der Turmbildung und der Anschlüsse in der vertikalen Mitte der Türme kann die In­stallation der Wechselstromzuleitungen elektrisch besonders gün­stig vorgenommen werden. Die Durchführungsisolatoren 19 (FIG 3) der Sekundäranschlüsse der Transformatoren können alle in der gleichen Ebene in etwa gleichen Abständen in die Hallenwände ver­legt werden, so daß die kürzest möglichen Verbindungsleitungen zwischen den Transformatoren und den Gleichrichtertürmen gege­ben sind. Auch die Art der Anschlüsse der einzelnen Ventiltürme auf halber Höhe führt zu besonders kurzen, kreuzungs- und umlen­kungsfreien Wechselstromverbindungen. Dadurch werden die elek­trischen und magnetischen Wechselwirkungen zwischen den Zulei­tungen auf ein Minimum begrenzt.FIG. 2 shows how the thyristor assemblies made up of thyristors 15, valve reactors 16 and surge arresters 17 in the form of modules 18 (for simplicity only two modules per tower are shown) as floors of a total of 12 valve towers VT1 to VT12 in principle are. The electrical circuit corresponds to that of FIG 1 and requires no further explanation. The valve towers VT1, VT2 and VT3 are assigned the connecting lines R1, S1, T1 of the transformer TR1, which are connected to the relevant strand in the vertical center thereof. The towers VT4, VT5 and VT6 is the transformer TR2; the towers VT7, VT8 and VT9 the transformer TR3 and the towers VT10, VT11 and VT12 the transformer TR4 assigned accordingly. This type of tower formation and the connections in the vertical center of the towers make the installation of the AC supply lines electrically particularly inexpensive. The bushing insulators 19 (FIG. 3) of the secondary connections of the transformers can all be laid in the same level at approximately the same intervals in the hall walls, so that the shortest possible connecting lines between the transformers and the rectifier towers are provided. The type of connections of the individual valve towers at half height also leads to particularly short, cross-connection and deflection-free alternating current connections. This minimizes the electrical and magnetic interactions between the supply lines.

Diese räumlich günstige Anordnung zeigt sich besonders deutlich in der Draufsicht auf die Ventilhalle in FIG 3. Daraus ist auch zu erkennen, daß die zu einem Lichtleiterkabel 20 zusammenge­faßten Steuerleitungen zu den einzelnen Thyristoren auf beson­ders günstige Weise in die Mitte zwischen die beiden Ventil­turmreihen VT1 bis VT6 und VT7 bis VT12 und nach außen zu der zentralen Steuerelektronik (Fußpunktelektronik) 21 gut zugäng­lich verlegt werden können.This spatially advantageous arrangement can be seen particularly clearly in the top view of the valve hall in FIG. 3. It can also be seen from this that the control lines combined to form an optical fiber cable 20 to the individual thyristors in a particularly favorable manner in the middle between the two rows of valve towers VT1 to VT6 and VT7 to VT12 and to the outside to the central control electronics (base electronics) 21 can be easily accessible.

Der Längsschnitt durch die Ventilhalle 9 in FIG 4 läßt erkennen, daß auch die gleichstromseitige Leitungsführung zu den außen an­geordneten Glättungsdrosseln 13, 14 mit einer kurzen, geradlinig geführten Leitung erfolgen kann, die sich nicht mit der Wechsel­stromseite kreuzt.The longitudinal section through the valve hall 9 in FIG. 4 shows that the direct-current line routing to the smoothing chokes 13, 14 arranged on the outside can also be carried out with a short, straight-line line which does not intersect with the alternating-current side.

In FIG 5 wird deutlich, daß die Durchführungsisolatoren 19 etwa in gleicher Höhe der Wechselstromanschlüsse der Gleichrichter­türme liegen und damit eine besonders kurze Leitungsführung er­möglichen. In den Figuren 4 und 5 ist auch die modulare Bauweise der Türme gut zu erkennen. Jeder der Türme besteht aus zehn Eta­gen (Modulen 18) identischen Aufbaues und gleicher Isolierab­stände voneinander und von den Nachbartürmen. Der gezeigte Auf­bau mit zehn Modulen pro Turm entspricht einer Durchgangslei­stung von 500 MW. Die Lichtleiterkabel haben dabei eine maximale Länge bis zur Fußpunktelektronik 21 von ca. 35 m. Dies ermöglicht einen kostengünstigen kellerfreien Aufbau der Ventilhalle und eine störungssichere Anordnung der Fußpunktelektronik außerhalb der Ventilhalle.In FIG 5 it is clear that the bushing insulators 19 are approximately at the same level as the AC connections of the rectifier towers and thus allow a particularly short line routing. FIGS. 4 and 5 also clearly show the modular design of the towers. Each of the towers consists of ten floors (modules 18) of identical construction and insulation distances from each other and from the neighboring towers. The structure shown with ten modules per tower corresponds to a throughput of 500 MW. The fiber optic cables have a maximum length of about 35 m to the base electronics 21. This enables a cost-effective cellar-free construction of the valve hall and a fail-safe arrangement of the base electronics outside the valve hall.

Claims (1)

Stromrichteranlage zum Kuppeln zweier Hochspannungs-Drehstrom­netze, bestehend aus einer jedem der zu kuppelnden Netze zuge­ordneten Drehstrom-Vollweg-Stromrichteranordnung mit je einem Drehstromtransformator, von denen der eine sekundärseitig in Stern und der andere in Dreieck geschaltet ist, und steuerbaren Halbleitern, die von einer zentralen Steuerungselektronik so gesteuert werden, daß die eingangsseitige Stromrichteranordnung als Gleichrichter und die ausgangsseitige Stromrichteranordnung als Wechselrichter arbeitet, und die steuerbaren Halbleiter in Form von einheitlichen Funktionsgruppen in Modulbauweise, be­stehend aus einem Halterungsrahmen, der je eine Ventildrossel und eine gleiche Anzahl von Thyristoren beinhaltet und mit elek­trischen Anschlußelementen sowie Halterungselementen für die Be­festigung der Abstandsisolatoren versehen ist, derart überein­ander angeordnet sind, daß gleichartig aufgebaute Stromrichter­türme (Ventiltürme) gebildet werden, die gleichstromseitig gleichpolig untereinander und drehstromseitig mit den zugeordne­ten in Stern und Dreieck geschalteten Sekundärwicklungen der Drehstromtransformatoren verbunden sind, dadurch ge­kennzeichnet, daß die jeder sekundärseitigen Dreh­stromphase (R, S, T) jedes Drehstromtransformators (TR1 bis TR4) zugeordneten Gleichrichterbrückenzweige einen eigenen Turm (VT1 bis VT12) bilden, der aus einer leistungsabhängigen Anzahl von mit gleichem Isolierabstand übereinander angeordneter Etagen (18) besteht, die aus modularen Funktionsgruppen (15, 16, 17) gebildet sind.Converter system for coupling two high-voltage three-phase networks, consisting of a three-phase full-way converter arrangement assigned to each of the networks to be coupled, each with a three-phase transformer, one of which is connected on the secondary side in a star and the other in a triangle, and controllable semiconductors which are connected from a central one Control electronics are controlled so that the input-side converter arrangement works as a rectifier and the output-side converter arrangement works as an inverter, and the controllable semiconductors in the form of uniform functional groups in modular design, consisting of a mounting frame, each containing a valve throttle and an equal number of thyristors and with electrical Connection elements and mounting elements for fastening the spacer insulators are provided one above the other in such a way that converter towers (valve towers) of the same structure are formed which have the same pole on the DC side ig are connected to each other and on the three-phase side with the associated secondary windings of the three-phase transformers connected in star and delta, characterized in that the rectifier bridge branches assigned to each three-phase phase (R, S, T) of each three-phase transformer (TR1 to TR4) have their own tower (VT1 to VT12) form, which consists of a power-dependent number of floors (18) arranged one above the other with the same insulation spacing, which are formed from modular function groups (15, 16, 17).
EP88110308A 1987-07-13 1988-06-28 Power converter assembly for coupling two kinds of high-voltage three-phase networks together Expired - Lifetime EP0299275B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88110308T ATE73579T1 (en) 1987-07-13 1988-06-28 POWER CONVERTER SYSTEM FOR COUPLING TWO HIGH-VOLTAGE THREE-PHASE NETWORKS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3723123 1987-07-13
DE3723123 1987-07-13

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EP0299275A1 true EP0299275A1 (en) 1989-01-18
EP0299275B1 EP0299275B1 (en) 1992-03-11

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US (1) US4816980A (en)
EP (1) EP0299275B1 (en)
JP (1) JPS6430459A (en)
AT (1) ATE73579T1 (en)
BR (1) BR8803500A (en)
CA (1) CA1295669C (en)
DE (1) DE3869001D1 (en)
IN (1) IN169518B (en)

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WO2010037634A1 (en) 2008-10-01 2010-04-08 Siemens Aktiengesellschaft Electrical device having a support frame
EP2256915A1 (en) * 2008-03-18 2010-12-01 New Energy Power Company Electric energy feedback device
US8026629B2 (en) 2005-01-27 2011-09-27 Siemens Aktiengesellschaft Medium voltage land connection for marine vessels
CN108476597A (en) * 2015-12-28 2018-08-31 Abb瑞士股份有限公司 Valve module for HVDC power converters
EP3514943A1 (en) 2018-01-22 2019-07-24 Siemens Aktiengesellschaft Control system for controlling a plurality of controllable units, in particular a converter device with a plurality of controllable power semiconductor switches, converter device and method for operating the converter device
US11323018B2 (en) 2019-07-23 2022-05-03 Siemens Energy Global GmbH & Co. KG Method for controlling controllable power semiconductor switches of a converter assembly with a plurality of switching modules having controllable power semiconductor switches, and a converter assembly with a control system configured for performing the method

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SE464492B (en) * 1989-08-16 1991-04-29 Asea Brown Boveri ARRANGEMENT OF VALVE STACK PUTS HIGH VOLTAGE DC IN A VALVE HALL
US5214366A (en) * 1989-11-13 1993-05-25 Siemens Aktiengesellschaft Three-phase converter for polyphase induction motors
SE9001436L (en) * 1990-04-23 1991-10-24 Asea Brown Boveri STROEMRIKTARANLAEGGNING
US5079399A (en) * 1990-08-06 1992-01-07 Denki Kogyo Co., Ltd. High-frequency induction heating apparatus
SE467809B (en) * 1991-01-15 1992-09-14 Asea Brown Boveri VALVE STACK BEFORE HIGH VOLTAGE INCLUDING FIRE PROTECTORS PROVIDED BETWEEN THE ABOVE
SE9401184L (en) * 1994-04-08 1995-10-09 Asea Brown Boveri Nested valve device for high voltage and high power
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BRPI0621040A2 (en) † 2006-01-20 2011-11-29 Abb Technology Ltd converter
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CN102263414A (en) * 2010-05-25 2011-11-30 新能动力（北京）电气科技有限公司 Electrical energy changer and system
RU2569929C1 (en) * 2014-08-27 2015-12-10 Ариф Гасан оглы Аслан-заде Three-phase ac-to-dc voltage transducer (versions)
WO2016082863A1 (en) * 2014-11-25 2016-06-02 Abb Technology Ltd Valve unit for power converter station
CN109417070B (en) * 2016-04-06 2022-09-09 西门子能源全球有限公司 Electrical device with semiconductor circuit
EP3626027A1 (en) * 2017-05-18 2020-03-25 Nvent Services Gmbh Universal power converter
EP3695501B1 (en) 2017-11-21 2024-04-24 Siemens Energy Global GmbH & Co. KG Converter assembly
CN110939302A (en) * 2018-09-25 2020-03-31 中国电力工程顾问集团西南电力设计院有限公司 Flexible direct current valve hall structure
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Cited By (11)

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EP1113570A1 (en) * 1999-12-28 2001-07-04 Electric Boat Corporation Modular transformer for use with multi-level power converter
US8026629B2 (en) 2005-01-27 2011-09-27 Siemens Aktiengesellschaft Medium voltage land connection for marine vessels
EP2256915A1 (en) * 2008-03-18 2010-12-01 New Energy Power Company Electric energy feedback device
EP2256915A4 (en) * 2008-03-18 2012-07-25 New Energy Power Company Electric energy feedback device
US8599584B2 (en) 2008-03-18 2013-12-03 New Energy Power Company Device for feeding back power
WO2010037634A1 (en) 2008-10-01 2010-04-08 Siemens Aktiengesellschaft Electrical device having a support frame
CN102171775B (en) * 2008-10-01 2013-08-07 西门子公司 Electrical device having a support frame
CN108476597A (en) * 2015-12-28 2018-08-31 Abb瑞士股份有限公司 Valve module for HVDC power converters
CN108476597B (en) * 2015-12-28 2020-12-18 Abb电网瑞士股份公司 Valve assembly for HVDC power converter
EP3514943A1 (en) 2018-01-22 2019-07-24 Siemens Aktiengesellschaft Control system for controlling a plurality of controllable units, in particular a converter device with a plurality of controllable power semiconductor switches, converter device and method for operating the converter device
US11323018B2 (en) 2019-07-23 2022-05-03 Siemens Energy Global GmbH & Co. KG Method for controlling controllable power semiconductor switches of a converter assembly with a plurality of switching modules having controllable power semiconductor switches, and a converter assembly with a control system configured for performing the method

Also Published As

Publication number Publication date
DE3869001D1 (en) 1992-04-16
EP0299275B1 (en) 1992-03-11
BR8803500A (en) 1989-01-31
JPS6430459A (en) 1989-02-01
CA1295669C (en) 1992-02-11
ATE73579T1 (en) 1992-03-15
IN169518B (en) 1991-11-02
US4816980A (en) 1989-03-28

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